SikaRoof® Vap 4000 E SA FR

CE marking and declaration of performance based on EN 13984:2013 Flexible sheets for waterproofing — Plastic and rubber vapour control layers — Definitions and characteristics

Mat reinforcement and aluminum foil top layer with a bottom layer of a hot melt adhesive and release liner.

18 months from date of production

Product must be stored in original unopened and undamaged packaging in dry conditions, without UV light exposure and temperatures between +5 °C and +30 °C. Do not stack pallets of the rolls on top of each other, or un?der pallets of any other materials during transport or storage. Always refer to packaging.

Priming for metal decking and adjoining substrates.

+5 °C minimum

+5 °C minimum

The supporting structure must be of sufficient structural strength to apply all new and existing layers of the roof build-up and the complete roof system must be designed and secured against wind uplift loadings. The substrate must be uniform, firm, smooth and free of any sharp protrusion or burrs, clean, dry, free of grease, bitumen, oil, dust and loose surface sand or gravel dressing.

Use the appropriate preparation equipment to achieve the required substrate quality. Any dust must be completely removed before application of the Product by suitable dust extraction equipment.

Application by trained personnel

The application of this Product must only be carried out by an applicator that is trained or approved by Sika. The applicator must also be experienced in this type of application.

Strictly follow installation procedures

Strictly follow installation procedures as defined in Method Statements, application manuals and working instructions which must always be adjusted to the actual site conditions.

PRIMING

1. Apply where required to the prepared substrate,SikaRoof® Primer-600 at the required consumption.

ALIGNMENT

Profiled metal decks:

1. The sheets must be laid in the direction of the deck ribs. Where side or longitudinal overlap seams occur, they must be fully supported by aligning over the full surface of a top rib.

OVERLAP SEAMS

1. The Product must be rolled down firmly with a pressure roller or by applying pressure to seal overlap seams.

2. If seams are not immediately closed after unrolling the Product, all seams must be cleaned with SikaRoof® Cleaner L-100, or Sarnafil® T Prep. Allow the cleaners to evaporate completely before bonding.

Profiled metal decks:

1. At the end of the rolled sheet, apply an additional 20 cm wide support strip of the Product.

2. Position the Product so it aligns perpendicular to the deck rib direction. This provides continuous support over the ribs allowing the ends of the sheets to be fully bonded.

    

BONDING

Bonding at low temperatures

If the Product is to be applied between +5 °C and +10 °C ambient temperature, heat the seams first using hot-air welding equipment before rolling with a pressure roller. Hot-air welding equipment (for instance Leister Triac) must be set at ~+300 °C with a speed of ~5 m/min.

1. Check the alignment of the sheets before bonding and re-align where necessary.

2. At one end of the sheet, peel away part of the release liner from the underside and bond this part to the substrate.

3. Peel away the release liner sideways from the rest of the sheet to allow it to bond to the substrate.

   4. Roll the entire surface area of the applied mem-
       brane with a heavy roller.
   5. At T-joints, the edges of the middle cover sheet
       must be mitred at 45°.
   6. After bonding into position, use a small pressure
       roller to firmly press together, all overlaps including
       the sheet bevels.

DETAILING

1. All details such as internal and external corners, upstands, vent pipes, support metalwork must be cut and sealed effectively.

2. The Product must always be attached on the warm side of the thermal insulation.

3. The upper edge of the Product must be taken up to the top edge / surface of the insulation.